31st parallel north
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The 31st parallel north is a circle of latitude that is 31 degrees north of the Earth's equatorial plane. It crosses Africa, Asia, the Pacific Ocean, North America and the Atlantic Ocean. At this latitude the sun is visible for 14 hours, 10 minutes during the summer solstice and 10 hours, 8 minutes during the winter solstice.[1]
Part of the border between Iran and Iraq is defined by the parallel.
In the United States, it defines part of the border between the states of Mississippi and Louisiana, and most of the border between Alabama and Florida. Andrew Ellicott surveyed this parallel in 1797, which in Pinckney's Treaty two years before had been defined as the border between the United States and the Spanish territory of West Florida.
Around the world
Starting at the Prime Meridian and heading eastwards, the parallel 31° north passes through:
Co-ordinates Country, territory or sea Notes 31°0′N 0°0′E / 31.000°N 0.000°E / 31.000; 0.000 (Prime Meridian) Algeria
31°0′N 9°22′E / 31.000°N 9.367°E / 31.000; 9.367 (Tunisia) Tunisia
31°0′N 10°17′E / 31.000°N 10.283°E / 31.000; 10.283 (Libya) Libya
31°0′N 17°33′E / 31.000°N 17.550°E / 31.000; 17.550 (Mediterranean Sea) Mediterranean Sea Gulf of Sidra 31°0′N 20°8′E / 31.000°N 20.133°E / 31.000; 20.133 (Libya) Libya
31°0′N 24°56′E / 31.000°N 24.933°E / 31.000; 24.933 (Egypt) Egypt
31°0′N 28°43′E / 31.000°N 28.717°E / 31.000; 28.717 (Mediterranean Sea) Mediterranean Sea 31°0′N 29°35′E / 31.000°N 29.583°E / 31.000; 29.583 (Egypt) Egypt
31°0′N 34°21′E / 31.000°N 34.350°E / 31.000; 34.350 (Israel) Israel
Passing just north of Yeruham 31°0′N 35°24′E / 31.000°N 35.400°E / 31.000; 35.400 (Jordan) Jordan
31°0′N 37°30′E / 31.000°N 37.500°E / 31.000; 37.500 (Saudi Arabia) Saudi Arabia
Passing through Arar 31°0′N 42°14′E / 31.000°N 42.233°E / 31.000; 42.233 (Iraq) Iraq
Passing through Nasiriyah 31°0′N 47°42′E / 31.000°N 47.700°E / 31.000; 47.700 (Iran / Iraq border) Iran /
Iraq border
31°0′N 48°1′E / 31.000°N 48.017°E / 31.000; 48.017 (Iran) Iran
31°0′N 61°50′E / 31.000°N 61.833°E / 31.000; 61.833 (Afghanistan) Afghanistan
31°0′N 66°35′E / 31.000°N 66.583°E / 31.000; 66.583 (Pakistan) Pakistan
Balochistan
Punjab31°0′N 74°33′E / 31.000°N 74.550°E / 31.000; 74.550 (India) India
Punjab
Himachal Pradesh
Uttarakhand31°0′N 79°32′E / 31.000°N 79.533°E / 31.000; 79.533 (China) People's Republic of China
Tibet
Sichuan
Chongqing
Hubei
Anhui
Zhejiang
Jiangsu
Zhejiang - for about 5 km (3.1 mi)
Jiangsu - for about 5 km (3.1 mi)
Zhejiang - for about 11 km (6.8 mi)
Shanghai31°0′N 121°53′E / 31.000°N 121.883°E / 31.000; 121.883 (East China Sea) East China Sea 31°0′N 130°39′E / 31.000°N 130.650°E / 31.000; 130.650 (Japan) Japan
Cape Sata, the southernmost point of the island of Kyūshū 31°0′N 130°41′E / 31.000°N 130.683°E / 31.000; 130.683 (Pacific Ocean) Pacific Ocean 31°0′N 116°20′W / 31.000°N 116.333°W / 31.000; -116.333 (Mexico) Mexico
Baja California 31°0′N 114°50′W / 31.000°N 114.833°W / 31.000; -114.833 (Gulf of California) Gulf of California 31°0′N 113°6′W / 31.000°N 113.100°W / 31.000; -113.100 (Mexico) Mexico
Sonora
Chihuahua31°0′N 105°33′W / 31.000°N 105.550°W / 31.000; -105.550 (United States) United States
Texas
Louisiana
Mississippi / Louisiana border
Mississippi
Alabama
Alabama / Florida border
Georgia31°0′N 81°28′W / 31.000°N 81.467°W / 31.000; -81.467 (Atlantic Ocean) Atlantic Ocean 31°0′N 9°49′W / 31.000°N 9.817°W / 31.000; -9.817 (Morocco) Morocco
31°0′N 3°33′W / 31.000°N 3.550°W / 31.000; -3.550 (Algeria) Algeria
See also
References
- ^ "Duration of Daylight/Darkness Table for One Year". U.S. Naval Observatory. 2019-09-24. Archived from the original on 2019-10-12. Retrieved 2021-03-10.
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